Mystical philosophy has an intimate connection with the mainstream of Islamic philosophy. It consists of several main strands, ranging from Isma'ili thought to the metaphysics of al-Ghazali and Ibn al-'Arabi, and with a continuing powerful presence in the contemporary Islamic world. Although mystical thinkers were aware that they were advocating an approach to thinking and knowledge which differed from much of the Peripatetic tradition, they constructed a systematic approach which was often continuous with that tradition. On the whole they emphasized the role of intellectual intuition in our approach to understanding reality, and sought to show how such an understanding might be put on a solid conceptual basis. The ideas that they created were designed to throw light on the nature of the inner sense of Islam.

It is important at the outset to ask what is meant by mystical philosophy in the context of the Islamic philosophical tradition. The term in Arabic closest to the phrase 'mystical philosophy' would perhaps be al-hikmat al-dhawqiyya, literally 'tasted philosophy or wisdom', which etymologically corresponds exactly to sapience from the Latin root sapere, meaning to taste. As understood in English, however, the term 'mystical philosophy' would include other types of thought in the Islamic context, although al-hikmat al-dhawqiyya was at its heart. Al-hikmat al-dhawqiyya is usually contrasted with discursive philosophy, or al-hikmat al-bahthiyya. Mystical philosophy in Islam would have to include all intellectual perspectives, which consider not only reason but also the heart-intellect, in fact primarily the latter as the main instrument for the gaining of knowledge. If this definition is accepted, then most schools of Islamic philosophy had a mystical element, for there was rarely a rationalistic philosophy developed in Islam which remained impervious to the distinction between reason and the intellect (as nous or intellectus) and the primacy of the latter while rejecting altogether the role of the heart-intellect in gaining knowledge.

This entry concentrates on those schools which not only include but emphasize noesis and the role of the heart-intellect or illumination in the attainment of knowledge. We shall therefore leave aside the Peripatetic school, despite the mystical elements in certain works of al-Farabi, the 'oriental philosophy' of Ibn Sina (Nasr 1996b) and the doctrine of the intellect adopted by the Muslim Peripatetics (mashsha'un) in general. Instead, the discussion will concentrate primarily upon the Isma'ili philosophy so closely connected with Hermetic, Pythagorean and Neoplatonic teachings, the school of Illumination (ishraq) of al-Suhrawardi and his followers, certain strands of Islamic philosophy in Spain and later Islamic philosophy in Persia and India. However, it would also have to include the doctrinal formulations of Sufism and its metaphysics from al-Ghazali and Ibn al-'Arabi to the present.

* Corbin, H. (1993) The History of Islamic Philosophy, in collaboration with S.H. Nasr and O. Yahya, trans. P. Sherrard, London: Kegan Paul International. (The first history to lay proper emphasis on Persian philosophy.)

* Corbin, H. (1994) Trilogie ismaélienne (Isma'ili Trilogy), Paris: Verdier. (Discussion of some of the most important Isma'ili texts.)

* Ha'iri Yazdi, M. (1992) The Principles of Epistemology in Islamic Philosophy - Knowledge by Presence, Albany, NY: State University of New York Press. (The best account of 'ilm al-huduri, knowledge by presence.)